Definition of armor-plated in US English:

armor-plated

(British armour-plated)

adjective

  • 1Having a tough metal covering as protection from attack.

    ‘armor-plated vehicles’
    figurative ‘armor-plated virus protection’
    1. 1.1 (of a person) strong and resistant to attack or criticism.
      ‘an armor-plated politician’
      ‘he set to with characteristic vigor and armor-plated self-assurance’

Pronunciation

armor-plated

/ˌɑrmərˈpleɪdəd//ˌärmərˈplādəd/